Aerodynamics of two-dimensional slotted bluff bodies
Aerodynamic characteristics of two-dimensional, slotted bluff bodies were experimentally investigated. Flow visualizations, base pressure measurements, mean velocity vector measurements, and drag force measurements were conducted to analyze effects of spacing ratio (i.e., porosity), curvature, and vent. Low porosity model configurations produced stable near-wake patterns with enhanced vortex sheddings of overall wake formations. Model curvature reduced drag forces and weakened the vortex sheddings. Stabilizing effect of curvature on the near-wake patterns was also found. A vent combined with large model curvature was found to control drag force effectively, as well as suppressing vortex sheddings. 10 refs., 52 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Minnesota Univ., Minneapolis (USA). Dept. of Aerospace Engineering and Mechanics
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6493523
- Report Number(s):
- SAND-88-7151; ON: DE89007288
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AERODYNAMICS
AEROSOLS
ANEMOMETERS
CALIBRATION
COLLOIDS
DATA
DATA ACQUISITION
DATA ANALYSIS
DISPERSIONS
DRAG
EXPERIMENTAL DATA
FLOW VISUALIZATION
FLUID FLOW
FLUID MECHANICS
INFORMATION
MEASURING INSTRUMENTS
MECHANICS
NUMERICAL DATA
PARACHUTES
RESIDUES
SCALE MODELS
SMOKES
SOLS
STRUCTURAL MODELS
TUNNELS
UNDERGROUND FACILITIES
VORTEX FLOW
WIND TUNNELS